Key facts
- VAT is charged at each stage of production and distribution.
- Each business in the chain only pays HMRC the value it has added.
- The end consumer pays the full VAT but cannot reclaim it.
- Businesses act as unpaid tax collectors for HMRC.
VAT Through the Supply Chain
VAT is a multi-stage tax. At each step — from raw materials to the shop counter — the business adds VAT to its selling price and reclaims the VAT it paid on purchases. Only the value added at each stage is effectively taxed.[1]
Worked Example
Imagine a wooden table being made and sold:
| Stage | Sale Price (ex VAT) | VAT Charged (20%) | VAT Reclaimed | VAT Paid to HMRC |
|---|---|---|---|---|
| Timber supplier | £50 | £10 | £0 | £10 |
| Furniture maker | £200 | £40 | £10 | £30 |
| Retailer | £350 | £70 | £40 | £30 |
| Total VAT collected by HMRC | £70 |
The consumer pays £420 (£350 + £70 VAT). HMRC receives £70 total — exactly 20% of the final selling price. Each business only forwarded the tax on the value they added.[2]
Output VAT and Input VAT
- Output VAT — the VAT you charge on your sales
- Input VAT — the VAT you pay on your business purchases
On each VAT Return, you report both amounts. If output exceeds input, you pay the difference to HMRC. If input exceeds output (common for exporters or businesses making large purchases), HMRC refunds you.[1]
The VAT Return
Most businesses file a VAT Return quarterly. The return has nine boxes covering your sales, purchases, and the net VAT due or reclaimable. Since April 2022, all returns must be filed digitally through Making Tax Digital.[3]
Key point: Businesses do not profit from VAT. They are intermediaries. The VAT charged on sales belongs to HMRC; the VAT paid on purchases is reclaimable. The system is designed so only the final consumer bears the cost.
What If You’re Not VAT-Registered?
If you’re below the VAT registration threshold and not voluntarily registered, you cannot charge VAT on your sales, but you also cannot reclaim the VAT you pay on business purchases. That VAT becomes a cost to your business.
Frequently Asked Questions
How does VAT work in the UK?
VAT is charged at each stage of the supply chain. Each business pays HMRC only the VAT on the value it has added — the difference between the VAT charged on sales (output VAT) and the VAT paid on purchases (input VAT).
What is the difference between output VAT and input VAT?
Output VAT is the VAT you charge on your sales. Input VAT is the VAT you pay on business purchases. On each VAT Return you report both, and pay (or reclaim) the difference.
Who actually pays VAT?
The end consumer bears the full cost of VAT. Businesses act as unpaid tax collectors for HMRC — they charge VAT on sales but reclaim the VAT on their own purchases, so the tax is neutral for them.
How often do you file a VAT Return?
Most VAT-registered businesses file a VAT Return quarterly. Since April 2022, all returns must be filed digitally through Making Tax Digital.
Further Reading
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Sources
- How VAT works — GOV.UK
- VAT guide (VAT Notice 700) — GOV.UK
- Introduction to VAT — GOV.UK